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#68

Grok 4.20

X AI Release: 2026-03-31 Tested on: 2026-05-08 15:32 x-ai/grok-4.20::medium
(medium) (none)

Identity note

Grok 4.20 Beta was the preview version of Grok 4.20.

Score

6.9

Consistency

8.3

Reliability

10.0

Total Cost

$0.756

Total Output Tokens

130,017

Input Price

$1.250 / 1M

Output Price

$2.500 / 1M

Tests Correct

Wrong Tests: 9

Attempt pass rate: 63.2%

Flaky tests

4

Flaky tests had mixed outcomes across runs (at least one pass and one fail).

Response Time (avg)

14.53s

Response Time (max): 63.48s

Response Time (total): 276.06s

Wrong answer: 5 Did not follow instructions: 2 Extra formatting: 1 No answer: 1

Run history

Tested on Score Reliability Tests Correct Total Cost Compare
2026-05-08 15:32 Suite changed 6.9 10.0 $0.756 Current run
2026-04-11 01:44 First recorded run 7.0 N/A $0.743 Compare

This run used a different benchmark suite. Keep suite changes in mind when reading historical movement.

Run comparison

RunScoreConsistencyReliabilityTests CorrectFlaky testsTotal Output TokensTotal CostResponse Time (avg)
2026-05-08 15:32 · Current run6.98.310.010/194130,017$0.75614.53s
2026-04-11 01:44 · First recorded run7.07.8N/A9/185111,626$0.74310.33s
Difference-0.1+0.5+1-1+18391+$0.014+4203ms

These two runs used different benchmark suites, so the deltas reflect both model changes and suite changes.

Charts

Choose the first model, then click a second model to open a side-by-side page.

Total Output Tokens

Score vs Total Output Tokens

Quick Compare

Grok 4.20mediumvsRing 2.6 1tnoneFree AvailableGrok 4.20mediumvsQwen3.5-35B-A3BmediumGrok 4.20mediumvsMiMo-V2-FlashmediumGrok 4.20mediumvsGPT-5.2mediumGrok 4.20mediumvsRing 2.6 1tmediumFree AvailableGrok 4.20mediumvsDeepSeek V3.2mediumGrok 4.20mediumvsGemini 3 Flash PreviewmediumGrok 4.20mediumvsGemini 3.1 Pro Previewmedium

Category Breakdown

Category Score Consistency Tests Correct
Anti-AI Tricks 8.2 7.9
Coding 4.3 1.1
Combined 10.0 10.0
Data parsing and extraction 10.0 10.0
Domain specific 5.3 10.0
General Intelligence 3.9 2.6
Instructions following 7.3 6.0
Puzzle Solving 7.7 10.0
Tool Calling 3.0 10.0
Trivia 3.0 10.0

Compared models